/* ==========================================================
   KEYSTONE BLOG — shared stylesheet
   Every post links to this one file, so restyling the whole
   blog means editing here only. Do not duplicate per post.
   ========================================================== */

@font-face{font-family:'Saira';font-style:normal;font-weight:400;font-display:swap;src:url('/fonts/saira-400.woff2') format('woff2')}
@font-face{font-family:'Saira';font-style:normal;font-weight:500;font-display:swap;src:url('/fonts/saira-500.woff2') format('woff2')}
@font-face{font-family:'Saira';font-style:normal;font-weight:600;font-display:swap;src:url('/fonts/saira-600.woff2') format('woff2')}
@font-face{font-family:'Saira';font-style:normal;font-weight:700;font-display:swap;src:url('/fonts/saira-700.woff2') format('woff2')}
@font-face{font-family:'Saira';font-style:normal;font-weight:800;font-display:swap;src:url('/fonts/saira-800.woff2') format('woff2')}
@font-face{font-family:'IBM Plex Mono';font-style:normal;font-weight:400;font-display:swap;src:url('/fonts/mono-400.woff2') format('woff2')}
@font-face{font-family:'IBM Plex Mono';font-style:normal;font-weight:500;font-display:swap;src:url('/fonts/mono-500.woff2') format('woff2')}
@font-face{font-family:'IBM Plex Mono';font-style:normal;font-weight:600;font-display:swap;src:url('/fonts/mono-600.woff2') format('woff2')}

:root{
  --paper:#e9edf0; --paper-2:#dfe5ea; --ink:#10293b; --ink-2:#46606f; --ink-3:#7b909c;
  --hair:#c3cfd8; --accent:#1f6feb;--accent-ink:#175ab8; --signal:#c2502f; --live:#2fa56e;
  --font:'Saira',system-ui,-apple-system,sans-serif;
  --mono:'IBM Plex Mono',ui-monospace,monospace;
  --ease:cubic-bezier(.22,.7,.2,1);
  --wrap:1180px;
}
*,*::before,*::after{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth}
@media (prefers-reduced-motion:reduce){html{scroll-behavior:auto}}
body{
  font-family:var(--font);color:var(--ink);background:var(--paper);line-height:1.62;
  -webkit-font-smoothing:antialiased;
  background-image:
    linear-gradient(var(--hair) 1px,transparent 1px),
    linear-gradient(90deg,var(--hair) 1px,transparent 1px);
  background-size:46px 46px,46px 46px;
}
a{color:inherit;text-decoration:none}
img{max-width:100%;height:auto;display:block}
.wrap{max-width:var(--wrap);margin-inline:auto;padding-inline:clamp(20px,5vw,40px)}
.skip{position:absolute;left:-9999px;top:0;z-index:400;background:var(--ink);color:var(--paper);padding:13px 22px;border-radius:0 0 10px 0;font-weight:600}
.skip:focus{left:0}
:focus-visible{outline:2px solid var(--accent);outline-offset:3px;border-radius:5px}

/* ---------- header ---------- */
.bnav{position:sticky;top:0;z-index:100;background:color-mix(in srgb,var(--paper) 88%,transparent);backdrop-filter:blur(12px);border-bottom:1px solid var(--hair)}
.bnav__in{display:flex;align-items:center;justify-content:space-between;gap:20px;padding-block:14px}
.brand{display:flex;align-items:center;gap:11px}
.brand__name{font-weight:800;font-size:1.05rem;letter-spacing:.03em;line-height:1}
.brand__sub{display:block;font-family:var(--mono);font-size:.54rem;letter-spacing:.2em;text-transform:uppercase;color:var(--ink-3);margin-top:3px}
.bnav__links{display:flex;align-items:center;gap:22px;font-size:.9rem;color:var(--ink-2)}
.bnav__links a:hover{color:var(--ink)}
.btn{display:inline-flex;align-items:center;gap:.5em;font-weight:600;font-size:.9rem;padding:.72em 1.3em;border-radius:999px;border:1.5px solid transparent;transition:transform .25s var(--ease),background .25s var(--ease)}
.btn--solid{background:var(--ink);color:var(--paper)}
.btn--solid:hover{transform:translateY(-2px);background:#173951}
.btn--ghost{border-color:var(--ink)}
.btn--ghost:hover{transform:translateY(-2px);background:rgba(16,41,59,.06)}
@media (max-width:700px){
  .bnav__in{flex-wrap:wrap;row-gap:2px;padding-block:10px}
  .bnav__links{order:3;width:100%;justify-content:space-between;gap:8px 14px;font-size:.88rem;flex-wrap:wrap}
  .bnav__links .btn{padding:.55em 1.05em;font-size:.84rem}
}
@media (max-width:400px){.bnav__links a[href="/#journey"]{display:none}}

/* ---------- breadcrumbs ---------- */
.crumbs{font-family:var(--mono);font-size:.68rem;letter-spacing:.13em;text-transform:uppercase;color:var(--ink-3);padding-top:26px}
.crumbs a:hover{color:var(--accent)}
.crumbs span{margin-inline:.5em}

/* ---------- article ---------- */
.post{padding-block:24px 70px}
.post__head{max-width:74ch;margin-bottom:34px}
.post__kicker{display:inline-flex;align-items:center;gap:.7em;font-family:var(--mono);font-size:.7rem;letter-spacing:.17em;text-transform:uppercase;color:var(--accent-ink);margin-bottom:18px}
.post__kicker::before{content:"";width:26px;height:1px;background:var(--accent)}
.post h1{font-size:clamp(2rem,4.4vw,3.15rem);font-weight:800;letter-spacing:-.028em;line-height:1.04;margin-bottom:.4em}
.post__standfirst{font-size:clamp(1.05rem,1.5vw,1.22rem);color:var(--ink-2);max-width:62ch}
.post__meta{display:flex;flex-wrap:wrap;gap:8px 22px;margin-top:26px;padding-top:18px;border-top:1px solid var(--hair);font-family:var(--mono);font-size:.7rem;letter-spacing:.1em;text-transform:uppercase;color:var(--ink-2)}
.post__meta b{color:var(--ink-2);font-weight:500}
.post__meta a{color:var(--ink-2);text-decoration:underline;text-underline-offset:2px;text-decoration-thickness:1px;text-decoration-color:var(--hair);transition:color .2s,text-decoration-color .2s}
.post__meta a:hover{color:var(--accent);text-decoration-color:var(--accent)}

.post__body{max-width:68ch;font-size:1.06rem}
.post__body > * + *{margin-top:1.15em}
.post__body h2{font-size:clamp(1.4rem,2.4vw,1.85rem);font-weight:700;letter-spacing:-.018em;line-height:1.15;margin-top:2em;padding-top:.9em;border-top:1px solid var(--hair)}
.post__body h3{font-size:1.16rem;font-weight:600;margin-top:1.7em}
.post__body p{color:var(--ink-2)}
.post__body strong{color:var(--ink);font-weight:600}
.post__body a{color:var(--accent);text-decoration:underline;text-underline-offset:3px;text-decoration-thickness:1px}
.post__body a:hover{text-decoration-thickness:2px}
.post__body ul,.post__body ol{padding-left:0;list-style:none;display:grid;gap:.65em}
.post__body ul li{position:relative;padding-left:26px;color:var(--ink-2)}
.post__body ul li::before{content:"";position:absolute;left:0;top:.62em;width:11px;height:11px;border:1.5px solid var(--accent);border-radius:2px;transform:translateY(-50%)}
.post__body ul li::after{content:"";position:absolute;left:3px;top:.62em;width:5px;height:5px;background:var(--accent);border-radius:1px;transform:translateY(-50%)}
.post__body ol{counter-reset:step}
.post__body ol li{position:relative;padding-left:34px;color:var(--ink-2);counter-increment:step}
.post__body ol li::before{content:counter(step,decimal-leading-zero);position:absolute;left:0;top:.1em;font-family:var(--mono);font-size:.72rem;color:var(--accent);letter-spacing:.06em}
.post__body blockquote{border-left:2px solid var(--accent);padding:.2em 0 .2em 1.3em;color:var(--ink);font-size:1.1rem}
.post__body code{font-family:var(--mono);font-size:.9em;background:var(--paper-2);padding:.15em .45em;border-radius:4px}

/* callout box, drafting note style */
.note{position:relative;background:var(--paper-2);border:1.5px solid var(--ink);border-radius:12px;padding:22px 24px;margin-top:1.8em}
.note::before,.note::after{content:"";position:absolute;width:12px;height:12px;border:1.5px solid var(--ink-3)}
.note::before{top:8px;left:8px;border-right:none;border-bottom:none}
.note::after{bottom:8px;right:8px;border-left:none;border-top:none}
.note h4{font-family:var(--mono);font-size:.7rem;letter-spacing:.16em;text-transform:uppercase;color:var(--accent);margin-bottom:.7em}
.note p{color:var(--ink-2);font-size:.98rem}

/* ---------- end-of-post CTA ---------- */
.post__cta{max-width:68ch;margin-top:56px;padding:30px 32px;border:1.5px solid var(--ink);border-radius:14px;background:var(--paper-2);position:relative}
.post__cta h3{font-size:1.4rem;font-weight:700;letter-spacing:-.02em;margin-bottom:.45em}
.post__cta p{color:var(--ink-2);margin-bottom:1.2em;font-size:1rem}
.post__cta .row{display:flex;gap:11px;flex-wrap:wrap}

/* ---------- blog index ---------- */
.idx__head{padding-block:40px 12px;max-width:70ch}
.idx__head h1{font-size:clamp(2.1rem,4.6vw,3.2rem);font-weight:800;letter-spacing:-.028em;line-height:1.05;margin-bottom:.35em}
.idx__head p{color:var(--ink-2);font-size:1.08rem}
.posts{display:grid;gap:0;padding-block:26px 70px;list-style:none}
.posts li{border-top:1px solid var(--hair)}
.posts li:last-child{border-bottom:1px solid var(--hair)}
.posts a{display:grid;grid-template-columns:130px 1fr;gap:26px;padding:26px 10px;align-items:start;transition:background .2s var(--ease),padding .2s var(--ease)}
.posts a:hover{background:rgba(31,111,235,.05);padding-inline:18px}
.posts time{font-family:var(--mono);font-size:.72rem;letter-spacing:.1em;text-transform:uppercase;color:var(--ink-3);padding-top:.35em}
.posts h2{font-size:1.32rem;font-weight:700;letter-spacing:-.018em;line-height:1.25;margin-bottom:.35em}
.posts a:hover h2{color:var(--accent)}
.posts p{color:var(--ink-2);font-size:.97rem;max-width:64ch}
.posts .tag{display:inline-block;font-family:var(--mono);font-size:.63rem;letter-spacing:.14em;text-transform:uppercase;color:var(--accent);margin-top:.7em}
@media (max-width:640px){
  .posts a{grid-template-columns:1fr;gap:8px}
  .posts time{padding-top:0}
}


/* ---------- tool card grids (blog index + /tools.html) ---------- */
.tools{margin:3.25rem 0 0}
.tools__h{font-size:1.5rem;margin:0 0 .4rem;padding-top:1.75rem;border-top:1px solid rgba(16,41,59,.15)}
.tools__lead{margin:0 0 1.25rem;max-width:62ch;color:var(--ink-2)}
.tools__sub{font-size:.82rem;letter-spacing:.09em;text-transform:uppercase;color:var(--ink-3);margin:1.75rem 0 .6rem}
.tools__grid{list-style:none;padding:0;margin:0;display:grid;gap:.7rem;grid-template-columns:repeat(auto-fill,minmax(275px,1fr))}
.tools__grid a{display:block;height:100%;padding:.8rem .9rem;border:1px solid rgba(16,41,59,.18);border-radius:7px;
  background:rgba(255,255,255,.55);transition:border-color .15s var(--ease),transform .15s var(--ease)}
.tools__grid a:hover{border-color:var(--accent);transform:translateY(-1px)}
.tools__grid strong{display:block;font-size:.97rem;line-height:1.3;margin-bottom:.28rem}
.tools__grid span{display:block;font-size:.83rem;line-height:1.45;color:var(--ink-2)}

/* ---------- footer ---------- */
.bfoot{background:var(--ink);color:#b9cad6;padding-block:44px 30px;margin-top:20px}
.bfoot a{color:#b9cad6}
.bfoot a:hover{color:var(--paper)}
.bfoot__in{display:flex;flex-wrap:wrap;gap:26px;justify-content:space-between;align-items:flex-start}
.bfoot__brand .brand__name{color:var(--paper)}
.bfoot__links{display:flex;gap:30px;flex-wrap:wrap;font-size:.9rem}
.bfoot__col{display:grid;gap:9px}
.bfoot__col h4{font-family:var(--mono);font-size:.63rem;letter-spacing:.16em;text-transform:uppercase;color:#7c97a6;margin-bottom:3px}
.bfoot__base{margin-top:32px;padding-top:18px;border-top:1px solid rgba(255,255,255,.12);font-family:var(--mono);font-size:.62rem;letter-spacing:.12em;text-transform:uppercase;color:#7c97a6;display:flex;justify-content:space-between;gap:14px;flex-wrap:wrap}

/* ---------- post images ---------- */
.post__body figure{margin:2em 0;border:1px solid var(--hair);border-radius:12px;overflow:hidden;background:var(--paper-2)}
.post__body figure img{width:100%;display:block;height:auto}
.post__body figcaption{font-family:var(--mono);font-size:.72rem;line-height:1.5;letter-spacing:.02em;color:var(--ink-3);padding:.85em 1.1em;border-top:1px solid var(--hair);background:color-mix(in srgb,#fff 45%,var(--paper) 55%)}
@media (max-width:640px){.post__body figure{margin:1.4em -4px;border-radius:9px}}

/* ---------- data tables inside a post ---------- */
.tablewrap{max-width:68ch;overflow-x:auto;-webkit-overflow-scrolling:touch;border:1.5px solid var(--ink);border-radius:12px;background:var(--paper-2)}
.post__body table{border-collapse:collapse;width:100%;font-size:.95rem;min-width:22rem}
.post__body thead th{font-family:var(--mono);font-size:.68rem;letter-spacing:.14em;text-transform:uppercase;color:var(--accent);text-align:left;padding:13px 16px;border-bottom:1.5px solid var(--ink);white-space:nowrap}
.post__body tbody td{padding:10px 16px;border-bottom:1px solid var(--hair);color:var(--ink-2);vertical-align:top;font-variant-numeric:tabular-nums}
.post__body tbody tr:last-child td{border-bottom:none}
.post__body tbody td:first-child{color:var(--ink);font-weight:500}
@media (max-width:640px){.post__body table{font-size:.88rem}.post__body thead th,.post__body tbody td{padding-inline:12px}}